package com.ffws.base.exception;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.http.HttpStatus;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;

import java.util.ArrayList;
import java.util.List;

/**
 * @Author JC
 * @description TODO
 * @Date 2023-8-21 15:57
 * @Version 1.0
 */
@Slf4j
@ControllerAdvice
public class GlobalExceptionHandler {

    // 对项目的自定义异常类型进行处理
    @ResponseBody
    @ExceptionHandler(FFWSException.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public RestErrorResponse customException(FFWSException e) {

        // 记录异常
        log.error("系统异常{}",e.getErrMessage(),e);

        // 解析出异常信息
        String errMessage = e.getMessage();
        return new RestErrorResponse(errMessage);
    }

    @ResponseBody
    @ExceptionHandler(Exception.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public RestErrorResponse exception(Exception e) {

        // 记录异常
        log.error("系统异常{}",e.getMessage(),e);

        // 解析出异常信息
        return new RestErrorResponse(CommonError.UNKOWN_ERROR.getErrMessage());
    }

    @ResponseBody
    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public RestErrorResponse methodArgumentNotValidException(MethodArgumentNotValidException e) {

        BindingResult bindingResult = e.getBindingResult();
        // 存储错误信息
        List<String> errors = new ArrayList<>();
        bindingResult.getFieldErrors().stream().forEach(item->{
            errors.add(item.getDefaultMessage());
        });

        // 将list中的错误信息拼接起来
        String errMessage = StringUtils.join(errors, ",");
        // 记录异常
        log.error("系统异常{}",e.getMessage(),errMessage);

        // 解析出异常信息
        return new RestErrorResponse(errMessage);
    }
}
